diff --git a/doc/todo/allow_TMPL__95__LOOP_in_template_directives.mdwn b/doc/todo/allow_TMPL__95__LOOP_in_template_directives.mdwn
index 1d324e2a6..832397b0e 100644
--- a/doc/todo/allow_TMPL__95__LOOP_in_template_directives.mdwn
+++ b/doc/todo/allow_TMPL__95__LOOP_in_template_directives.mdwn
@@ -27,6 +27,8 @@ head-aches.  Anyway it didn't make sense to post the patch since
 everything's changed now.
 """]]
 
+NB: this *should* be 100% backwards compatible.
+
 # `lib/perl5/IkiWiki/Plugin/template.pm`
 
 [[!format perl """